"FILE - In this March 19, 2010 file photo, Steve Martin performs with the Steep Canyon Rangers band at Largo at the Coronet Theatre in Los Angeles. Martin is set to perform from the U.S. Capitol's west lawn during the annual ""A Capitol Fourth"" concert this year. Josh Groban, Little Richard, ""Glee"" star Matthew Morrison, ""American Idol"" winner Jordin Sparks and Broadway star Kelli O'Hara also share the bill.is set to perform from the U.S. Capitol's west lawn during the annual ""A Capitol Fourth"" concert this year. Josh Groban, Little Richard, ""Glee"" star Matthew Morrison, ""American Idol"" winner Jordin Sparks and Broadway star Kelli O'Hara also share the bill. (AP Photo/Chris Pizzello, File)"
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